#031C28
Closest named color: Rich Black (#0D1B2A). oklch(21.4% 0.039 232.2), rgb(3, 28, 40).
Aa
White text reads best on this color (17.49:1).
About this color
#031C28 is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.039 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.014 away. White text reads best on it, at 17.49:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.49:1 |
Values
| HEX | #031C28 |
| RGB | rgb(3, 28, 40) |
| HSL | hsl(199, 86%, 8%) |
| OKLCH | oklch(21.4% 0.039 232.2) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #031C28 | 17.49:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #031C28 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #031C28 text on white | 17.49:1 | AAA | Lc 104.2 | Preferred for body text |
| #031C28 text on black | 1.20:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE7
oklch(88.6% 0.025 229.2)
-
Step 300
300
#A4C7DA
oklch(81% 0.046 231.8)
-
Step 400
400
#70A9C7
oklch(70.7% 0.074 232.2)
-
Step 500
500
#4693B9
oklch(63% 0.095 232.5)
-
Step 600
600
#207DA5
oklch(55.6% 0.103 232.1)
-
Step 700
700
#0F698E
oklch(49.1% 0.096 232.8)
-
Step 800
800
#135673
oklch(42.7% 0.079 232.3)
-
Step 900
900
#19475D
oklch(37.7% 0.062 232.6)
-
Step 950
950 (this color)
#031C28
oklch(21.4% 0.039 232.2)
#031C28 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #161C29 | 0.026 |
| Deuteranopia (no green cones) | #111828 | 0.022 |
| Tritanopia (no blue cones) | #001F20 | 0.023 |
| Achromatopsia (no color) | #1A1A1A | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031C28
#031C28
oklch(21.4% 0.039 232.2)
- #271307
#271307
oklch(21.2% 0.039 50.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #031C28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.014
- Rich Navy #001219 ΔE 0.046
- Dark #1B2431 ΔE 0.048
- Jet #212529 ΔE 0.057
- Oxford Blue #1B263B ΔE 0.060
- Almost Black #070D0D ΔE 0.069
- Navy Blue #001146 ΔE 0.071
- Dark Navy #000435 ΔE 0.085
Use #031C28 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.